The Harman Kardon Onyx Studio 9 is an elegant, portable Bluetooth speaker known for its premium design, featuring a recycled aluminum handle, and delivering immersive, room-filling sound with crystal-clear vocals and deep bass via its 3-channel system and Constant Sound Field technology. It offers up to 8 hours of playtime, dual-device Bluetooth connectivity, and AuracastTM support for multi-speaker setups, making it easy to move around the home for superior audio anywhere.